// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_RENDERER_WEB_UI_EXTENSION_DATA_H_
#define CONTENT_RENDERER_WEB_UI_EXTENSION_DATA_H_

#include <map>
#include <string>

#include "base/macros.h"
#include "content/public/renderer/render_view_observer.h"
#include "content/public/renderer/render_view_observer_tracker.h"

namespace content {

class WebUIExtensionData
    : public RenderViewObserver,
      public RenderViewObserverTracker<WebUIExtensionData> {
public:
    explicit WebUIExtensionData(RenderView* render_view);
    ~WebUIExtensionData() override;

    // Returns value for a given |key|. Will return an empty string if no such key
    // exists in the |variable_map_|.
    std::string GetValue(const std::string& key) const;

private:
    // RenderViewObserver implementation.
    bool OnMessageReceived(const IPC::Message& message) override;
    void OnDestruct() override;

    void OnSetWebUIProperty(const std::string& name, const std::string& value);

    std::map<std::string, std::string> variable_map_;

    DISALLOW_IMPLICIT_CONSTRUCTORS(WebUIExtensionData);
};

} // namespace content

#endif // CONTENT_RENDERER_WEB_UI_EXTENSION_DATA_H_
